The primary possible risk of taking silica supplements is the formation of kidney stones according to WebMD. This occurs only rarely in patients taking antacids that contain silica regularly for an extended time period. The general risks from taking silica supplements as a medication are unknown as of 2015.
Also known as silicon, silica is a mineral, explains WebMD. People take silicon supplements to treat osteoporosis, cardiovascular disease, Alzheimer's disease, hair loss and other conditions. Scientists do not understand how silicon works or if it is an appropriate treatment for most of these conditions.
Some research shows a connection between receiving adequate silicon from food sources, and bone and collagen growth, states WebMD. Studies show that men and young women who get more silicon from their diets have stronger bones. It is possible that this reduces their risk of developing osteoporosis later in life. Increased silicon intake in older women who already have symptoms of osteoporosis does not correlate with an improvement in the condition.
As of 2015, there is insufficient evidence to show any connection between silicon intake and cardiovascular disease, Alzheimer's disease, hair loss, sprain and strain healing and digestive problems, reports WebMD. Although eating silicone-rich foods is likely safe, pregnant and breastfeeding women should avoid taking silicon supplements, advises WebMD.